Manufacture of beer



0,. ZWIETUSGH. -M-,ANUI'AIUTUBE 0f' BEER.A

No. 504,145. Patented Augfg,l 1893.

(No Model.) l2 Sheets-Sheet 1.

2 Sheets-Sheet '2.

R. .E .HE C SF. 0 U E, TR H U 1w WA ZP (m 0 ,A `M u d.. o M O (N,

Patented A11-g. 29

-sive factor in brewing.

-NITE STATES PATENT OFFICE.

OTro zwIETUsOH, OF MILWAUKEE, WISCONSIN.

-NIANUFACTURE OF BEER.

SPECIFICATION forming part of Letters Patent No. 504,145, dated August 29, 1893.

' Appnmionneanay7,1889. Seann. 309.864. (Nospecimens.)

To all whom it may concern:

Be it known that I, OTTO ZwIE'IUscH, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of,

ruh or storage-casks. -The function of.

the'aging process is'to "eliminate from the beer the-'yeast -which isintimately associated with it after ithasl undergone the main fermentation, fand this aging process, to obtain good results, is required to extend over a period of several weeks, thus forming an expen- Eorts have been made heretofore, with some degree of success, to provide a substitute for this aging process; but while the time has been reduced and the desired eects in ameasure obtained, the substituted treatment itself has always been expensive, and has required the expenditure of several days time in its application.

By my invention the elimination of the yeast,-

and consequently all the desirable effects of aging, may be effected as rapidly as the beer can be convenientlytransferred from one vessel to another; the result being obtained by subjecting the beer to a process of filtration between the time of main fermentation and the time of subjecting it to the carbonating or bunging process employed to give it the degree of life and eervescence necessary to tit it for the market. The turbidity which exists after the necessary effervescence has been imparted to the beer may be removed in any of the well-known ways; but the preferable way is to subject the beer to the common process of ltration while on the way from the bunging casks to the ultimate receptacles, preceded if necessary or desirable by an advance ltration, as set forth in my pending application, Serial No. 308,324, filed April 22, 1889.

In the accompanying drawing, I have represented an apparatus suitable for carrying my invention into effect, but as the apparatus, and particularly the filter, may be of apparatus simply by way of general illustration.

Figure l is a side elevation partly in rsection of an apparatus adapted to carry out my process by conducting the beer from the storage or ruh casks through the filtering apparatus into the carbonating or bunging cask. Fig. 2 is a side elevation of an apparatus adapted to carry out my process, by conducting the beer from the fermenting vats direct, through the filtering apparatus into the carbonating or bunging casks without the interposition of the ruh or storage-casks; and Fig. 3, a similar View representing an apparatus for carrying out my process, by subjecting the beer to filtration between the storagecasks and earbonat-ing or bunging casks, and then subjecting it to final filtration between the carbonating casks and the ultimate receptacles, in order to impart to it the required degree of brilliancy for the market.

In Fig. l, A is the ruh or storage-cask, which is to beunderstood as containing beer transferred to it in the usual manner from a fermenting vat, B. C is the carbonating or bunging cask, which in this case is upon a greatly varied, I present this particularform lower door than the storage-cask; and D is a Y filtering apparatus, located, in point of altitude, between the two, and communicating with the storage-cask A through a pipe, t, provided with suitable valves, and with the carbonating cask C through a pipe, s, likewise provided with suitable valves; so that the transfer of the beer from the one cask to the other through the ltering apparatus is effected by gravity. As a preliminary step to the operation of filtering, both vessels and the filter are suppliedwith air from the ordinary air reservoir to a` pressure equal to or slightly in excess of the inherent gaseous pressure in the beer. A pipe, fr, connecting the tops of the casks A and C maintains an equilibrium of pressure during the transfer. This pipe is likewise provided with valves, so that the communication may be opened and closed at will.

In Fig. 2 the filtering apparatus bears the saine relation to the fermenting vat B that in Fig. l it bears to the storage-cask A; but in this case as the fermenting vat B is an open IOO vessel.the pipem is drispensedmithfand'rilistead of,.it, the-.c'arbonatings` or hun ging: cask C is provided with a safety-valve, q. It will thus be seen that my process contemplates. passing the beer from the main fermentingvatB to the cask C eitherimmediatelythrough: the lter D, or mediately by way of the storage-cask A.

In Fig. 3 the relation of the vesselslland filtering apparatus is the same as inV Fig. 1, but since the vessels A and Care upon a common level, the impulsion of :the-.licenthnough 1 the filtering apparatus D and1 into tlnawessels C would be eiected by air pressure instead of' gravity. The same is true of the impulsion of fthe beer from -the carbonatingvesselC, through thelinal-flter E and intol the gult-.` mate receptacles F. f

' Theeair@pressure-mechanism forV impbllin g1g the been throughA Athe filtering; apparatusesi` is i not .shownin Athedrav'vingsv,-becaifrse. it' is Lwelli known and in common-use inevelyigbre'wery `Theeafbonating-o1bungingiinaslrflrmay be effected `either by fthe in-troductiondoff k-raensen "ainthemellfknowni way, or fby the injection 1 of'.` carbonio `acid ,gas,y orrt'he` intro-y duction of liquid -carbonicqacid f1 f "The ltering apparatus 1D;represen-t'fedin the dfrawings5'isLintendedqto forfn'i thesubjeot of.` aL separate applica/tion`` for` aqpatent. fi lIt, contains a suitable lil-tering'lnedi-um-p, raswto" the composition of whichlidonot liinit myself, i `though 1- -preferfforsome reasons, to' employ l the substance 1known-as paper-,ma'kerlshalff stuff. f 1 The pipes oand n-are;inlet1andQu-tletpip'esi for Waterfusedin Washing the lter.

The `pipe mis a drainage pipeyandithe'- Y'de-` vice 1,16, is sa stirrer co-aidl inthe cleansing ofil the .'filterin'gmaterial.

The cocks h'serve to admit air to the filter .o1-.expel it therefrom as may be required, and

the pressure isindicated by the gage g.

The-.filteringapparatusD may be any one of the well-known ltorms of'beer-ilter in common use.

Fora description of the particular filter and appurtenances represented in the drawings, reference may be had to Letters Patent of the United States,No.402,500,fgranted to me on theBOth dayof April, 1889, and No. 398,109, grantedito me on' the19th day of February, 1889. p

What I claim'vasnewfanddesire vtoisecu're by ILettersPatentris v 1^.T-lremethodofmanufacturin'gbeer,*which consistsdn sub-j ectingl iltoithe main fermenl tation, `:then v*passi ng it through a-'ltering' Inaterial;thenfcarbonatin g orbunging it'to give i it the requisitefilife and: "efferveseenceand l'finally' clarifying it', substantiall y `as described.

-2.' The method l'o manuacturingyclaiifying "land :Iilling--f;beer,'lwhiehrconsists in sub- .;jecting itto the main fermentation, th enf passrt'hrongh a" lfiltering apparatus' whilelon its `Way "tof-the ultimate receptacles, thereby imparting ltoitthefrequisit'degree:ofi brilliancy `:forthefmarketfsubstantially as described. OTTO ZWIETUSCI-I.

i In-- presence of- 

